#coding=utf-8
from PySide import QtCore, QtGui
class MyThread(QtCore.QThread):
    
    def __init__(self, parent=None):
        super(MyThread, self).__init__(parent)
        self.data = 0
        self.mutex = QtCore.QMutex()
        pass
    
    def setData(self, value):
        self.mutex.lock()
        self.data = value
        self.mutex.unlock()
        pass
    
    def getData(self):
        self.mutex.lock()
        value = self.data 
        self.mutex.unlock()
        return value
    
    def run(self):
        self.setData(10)
        
        print 'runned thread obj: {}'.format(self.objectName())
        
        while True:
            if self.getData() < 0:
                break
            
            print 'thread obj {} data: {}'.format(self.objectName(), self.getData())
            self.msleep(1000)
            
            self.setData(self.getData()-1)
        
        print 'thread finished'
        pass
    
    pass
class TestWidget(QtGui.QWidget):
    
    def __init__(self, parent=None):
        super(TestWidget, self).__init__(parent)
        
        self.thread = MyThread()
        
        self.btnStartThread = QtGui.QPushButton('Start thread', self)
        self.btnStartThread.clicked.connect(self.onStart)
        
        self.btnStopThread = QtGui.QPushButton('Stop thread', self)
        self.btnStopThread.clicked.connect(self.onStop)
        
        layout = QtGui.QVBoxLayout()
        layout.addWidget(self.btnStartThread)
        layout.addWidget(self.btnStopThread)
        
        self.setLayout(layout)
        pass
    
    @QtCore.Slot()
    def onStart(self):
        if not self.thread.isRunning():
            print 'on start {}'.format(self.objectName())
            print 'started thread obj: {}'.format(self.thread.objectName())
            
            self.thread.start()
        pass
    
    @QtCore.Slot()
    def onStop(self):
        print 'on stop {}'.format(self.objectName())
        print 'stopped thread obj: {}'.format(self.thread.objectName())
        self.thread.setData(-1)
        pass
    
    pass
#################################
if __name__ == '__main__':
    import sys
    
    app = QtGui.QApplication(sys.argv)
    
    main_widget = QtGui.QWidget()
    
    test_widget1 = TestWidget(main_widget)
    test_widget2 = TestWidget(main_widget)
    
    test_widget1.setObjectName('TestWidget1')
    test_widget2.setObjectName('TestWidget2')
    
    test_widget1.thread.setObjectName('Thread1')
    test_widget2.thread.setObjectName('Thread2')
    
    layout = QtGui.QHBoxLayout()
    layout.addWidget(test_widget1)
    layout.addWidget(test_widget2)
    
    main_widget.setLayout(layout)
    main_widget.show()
    
    sys.exit(app.exec_())
    pass

on start TestWidget1
started thread obj: Thread1
runned thread obj: Thread1
thread obj Thread1 data: 10
thread obj Thread1 data: 9
on stop TestWidget1
...
on start TestWidget2
started thread obj: Thread2
runned thread obj: Thread2
thread obj Thread2 data: 10
on stop TestWidget2
stopped thread obj: Thread2
thread finished